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introduce bitloops

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This commit is contained in:
mike
2026-01-18 02:58:37 +01:00
parent 112c16c525
commit 6daab5ef4e
5 changed files with 134 additions and 50 deletions
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2
src/main/java/puzzle/Export.java
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@@ -305,7 +305,7 @@ public record Export() {
}
// for (i = 0; i < L; i++) entry.pos()[i][Lemma.byteAt(lemma, i) - 1].add(idx);
}
for (int i = SwedishGenerator.MIN_LEN; i < index.length; i++) if (index[i].words().size() <= 0) throw new RuntimeException("No words for length " + i);
for (int i = 2; i < index.length; i++) if (index[i].words().size() <= 0) throw new RuntimeException("No words for length " + i);
return new Dict(Arrays.stream(index).map(i -> {
var words = i.words().toArray();
int numWords = words.length;

4
src/main/java/puzzle/Main.java
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@@ -44,12 +44,12 @@ public class Main {
@NoArgsConstructor
public static class Opts {
static int SSIZE = 25;
static int SSIZE = 24;
public int seed = (int) (System.nanoTime() ^ System.currentTimeMillis());
public int clueSize = SSIZE;
public int pop = SSIZE*2;
public int offspring = SSIZE*3;
public int gens =1200;
public int gens =600;
public String wordsPath = "nl_score_hints_v3.csv";
public double minSimplicity = 0; // 0 means no limit
public int threads = Math.max(1, Runtime.getRuntime().availableProcessors());

155
src/main/java/puzzle/Masker.java
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@@ -51,7 +51,7 @@ public record Masker(Rng rng, int[] stack, Clues cache) {
long stop = 1L << msb;
rayLo &= -(stop << 1);
}
// if (Long.bitCount(rayLo) + Long.bitCount(rayHi) > 1)
if (Long.bitCount(rayLo) + Long.bitCount(rayHi) >= MIN_LEN)
visitor.visit(key, rayLo, rayHi);
}
private static void processSlot(Clues c, SlotVisitor visitor, int key) {
@@ -69,11 +69,11 @@ public record Masker(Rng rng, int[] stack, Clues cache) {
// keep all lo (lo indices are < any hi index), but cut hi below stop
rayHi &= (stop - 1);
}
// if (Long.bitCount(rayLo) + Long.bitCount(rayHi) > 1)
if (Long.bitCount(rayLo) + Long.bitCount(rayHi) >= MIN_LEN)
visitor.visit(key, rayLo, rayHi);
}
public static Slot[] extractSlots(Clues grid, DictEntry[] index) {
var slots = new ArrayList<Slot>(grid.clueCount());
var slots = new ArrayList<Slot>(grid.clueCount());
grid.forEachSlot((key, lo, hi) -> slots.add(Slot.from(key, lo, hi, Objects.requireNonNull(index[Slot.length(lo, hi)]))));
return slots.toArray(Slot[]::new);
}
@@ -108,7 +108,7 @@ public record Masker(Rng rng, int[] stack, Clues cache) {
long lo_cl = grid.lo, hi_cl = grid.hi;
long penalty = (((long) Math.abs(grid.clueCount() - clueSize)) * 16000L);
boolean hasSlots = false;
if (!grid.isValid(2)) return 1_000_000_000L;
for (long bits = lo_cl; bits != X; bits &= bits - 1) {
long lsb = bits & -bits;
int clueIdx = numberOfTrailingZeros(lsb);
@@ -133,11 +133,13 @@ public record Masker(Rng rng, int[] stack, Clues cache) {
if ((rLo | rHi) != X) {
hasSlots = true;
if (Slot.horiz(key)) {
cHLo2 |= (cHLo & rLo); cHHi2 |= (cHHi & rHi);
cHLo2 |= (cHLo & rLo);
cHHi2 |= (cHHi & rHi);
cHLo |= rLo;
cHHi |= rHi;
} else {
cVLo2 |= (cVLo & rLo); cVHi2 |= (cVHi & rHi);
cVLo2 |= (cVLo & rLo);
cVHi2 |= (cVHi & rHi);
cVLo |= rLo;
cVHi |= rHi;
}
@@ -168,11 +170,13 @@ public record Masker(Rng rng, int[] stack, Clues cache) {
if ((rLo | rHi) != X) {
hasSlots = true;
if (Slot.horiz(key)) {
cHLo2 |= (cHLo & rLo); cHHi2 |= (cHHi & rHi);
cHLo2 |= (cHLo & rLo);
cHHi2 |= (cHHi & rHi);
cHLo |= rLo;
cHHi |= rHi;
} else {
cVLo2 |= (cVLo & rLo); cVHi2 |= (cVHi & rHi);
cVLo2 |= (cVLo & rLo);
cVHi2 |= (cVHi & rHi);
cVLo |= rLo;
cVHi |= rHi;
}
@@ -248,8 +252,7 @@ public record Masker(Rng rng, int[] stack, Clues cache) {
boolean h = (cHLo & (1L << clueIdx)) != X;
boolean v = (cVLo & (1L << clueIdx)) != X;
if (!h && !v) penalty += 1500;
else if (h && v) { /* ok */ }
else if (((h ? cHLo2 : cVLo2) & (1L << clueIdx)) != X) penalty += 600;
else if (h && v) { /* ok */ } else if (((h ? cHLo2 : cVLo2) & (1L << clueIdx)) != X) penalty += 600;
else penalty += 200;
}
for (long bits = ~hi_cl & MASK_HI; bits != X; bits &= bits - 1) {
@@ -259,8 +262,7 @@ public record Masker(Rng rng, int[] stack, Clues cache) {
boolean h = (cHHi & (1L << clueIdx)) != X;
boolean v = (cVHi & (1L << clueIdx)) != X;
if (!h && !v) penalty += 1500;
else if (h && v) { /* ok */ }
else if (((h ? cHHi2 : cVHi2) & (1L << clueIdx)) != X) penalty += 600;
else if (h && v) { /* ok */ } else if (((h ? cHHi2 : cVHi2) & (1L << clueIdx)) != X) penalty += 600;
else penalty += 200;
}
@@ -275,16 +277,20 @@ public record Masker(Rng rng, int[] stack, Clues cache) {
if (isLo(ri)) {
if (g.isClueLo(ri)) continue;
var d_idx = rng.randint2bitByte();
if (g.hasRoomForClue(OFFSETS_D_IDX[Slot.packSlotKey(ri, d_idx)])) {
int key = Slot.packSlotKey(ri, d_idx);
if (g.hasRoomForClue(key, OFFSETS_D_IDX[key])) {
g.setClueLo(1L << ri, d_idx);
placed++;
if (g.isValid(MIN_LEN)) placed++;
else g.clearClueLo(~(1L << ri));
}
} else {
if (g.isClueHi(ri)) continue;
var d_idx = rng.randint2bitByte();
if (g.hasRoomForClue(OFFSETS_D_IDX[Slot.packSlotKey(ri, d_idx)])) {
int key = Slot.packSlotKey(ri, d_idx);
if (g.hasRoomForClue(key, OFFSETS_D_IDX[key])) {
g.setClueHi(1L << (ri & 63), d_idx);
placed++;
if (g.isValid(MIN_LEN)) placed++;
else g.clearClueHi(~(1L << (ri & 63)));
}
}
@@ -296,16 +302,56 @@ public record Masker(Rng rng, int[] stack, Clues cache) {
var bytes = MUTATE_RI[rng.randint0_SIZE()];
for (int k = 0, ri; k < 4; k++) {
ri = bytes[rng.randint0_624()];
if (isLo(ri)) {
if (!c.cluelessLo(ri)) {
var d_idx = rng.randint2bitByte();
if (c.hasRoomForClue(OFFSETS_D_IDX[Slot.packSlotKey(ri, d_idx)])) c.setClueLo(1L << ri, d_idx);
if (c.notClue(ri)) { // ADD
byte d = rng.randint2bitByte();
int key = Slot.packSlotKey(ri, d);
if (c.hasRoomForClue(key, OFFSETS_D_IDX[key])) {
if (isLo(ri)) {
c.setClueLo(1L << ri, d);
if (!c.isValid(MIN_LEN)) c.clearClueLo(~(1L << ri));
} else {
c.setClueHi(1L << (ri & 63), d);
if (!c.isValid(MIN_LEN)) c.clearClueHi(~(1L << (ri & 63)));
}
}
} else { // HAS CLUE
int op = rng.randint(10);
if (op < 2) { // REMOVE
if (isLo(ri)) c.clearClueLo(~(1L << ri));
else c.clearClueHi(~(1L << (ri & 63)));
} else if (op < 5) { // CHANGE DIRECTION
byte d = rng.randint2bitByte();
int key = Slot.packSlotKey(ri, d);
if (c.hasRoomForClue(key, OFFSETS_D_IDX[key])) {
byte oldD = c.getDir(ri);
if (isLo(ri)) {
c.setClueLo(1L << ri, d);
if (!c.isValid(MIN_LEN)) c.setClueLo(1L << ri, oldD);
} else {
c.setClueHi(1L << (ri & 63), d);
if (!c.isValid(MIN_LEN)) c.setClueHi(1L << (ri & 63), oldD);
}
}
} else { // MOVE
int nri = bytes[rng.randint0_624()];
if (c.notClue(nri)) {
byte d = c.getDir(ri);
int nkey = Slot.packSlotKey(nri, d);
if (c.hasRoomForClue(nkey, OFFSETS_D_IDX[nkey])) {
if (isLo(ri)) c.clearClueLo(~(1L << ri));
else c.clearClueHi(~(1L << (ri & 63)));
if (isLo(nri)) c.setClueLo(1L << nri, d);
else c.setClueHi(1L << (nri & 63), d);
if (!c.isValid(MIN_LEN)) {
if (isLo(nri)) c.clearClueLo(~(1L << nri));
else c.clearClueHi(~(1L << (nri & 63)));
if (isLo(ri)) c.setClueLo(1L << ri, d);
else c.setClueHi(1L << (ri & 63), d);
}
}
}
}
} else if (!c.cluelessHi(ri)) {
var d_idx = rng.randint2bitByte();
if (c.hasRoomForClue(OFFSETS_D_IDX[Slot.packSlotKey(ri, d_idx)])) c.setClueHi(1L << (ri & 63), d_idx);
}
}
return c;
}
@@ -330,21 +376,29 @@ public record Masker(Rng rng, int[] stack, Clues cache) {
(a.vhi & ~maskHi) | (other.vhi & maskHi),
(a.rlo & ~maskLo) | (other.rlo & maskLo),
(a.rhi & ~maskHi) | (other.rhi & maskHi));
for (var l = c.lo & ~c.rlo & ~c.vlo; l != X; l &= l - 1) clearCluesLo(c, numberOfTrailingZeros(l), 0);
for (var l = c.lo & ~c.rlo & c.vlo; l != X; l &= l - 1) clearCluesLo(c, numberOfTrailingZeros(l), 1);
for (var l = c.lo & c.rlo & ~c.vlo; l != X; l &= l - 1) clearCluesLo(c, numberOfTrailingZeros(l), 2);
for (var l = c.lo & c.rlo & c.vlo; l != X; l &= l - 1) clearCluesLo(c, numberOfTrailingZeros(l), 3);
for (var h = c.hi & ~c.rhi & ~c.vhi; h != X; h &= h - 1) clearCluesHi(c, numberOfTrailingZeros(h), 0);
for (var h = c.hi & ~c.rhi & c.vhi; h != X; h &= h - 1) clearCluesHi(c, numberOfTrailingZeros(h), 1);
for (var h = c.hi & c.rhi & ~c.vhi; h != X; h &= h - 1) clearCluesHi(c, (numberOfTrailingZeros(h)), 2);
for (var h = c.hi & c.rhi & c.vhi; h != X; h &= h - 1) clearCluesHi(c, (numberOfTrailingZeros(h)), 3);
int guard = 0;
while (!c.isValid(MIN_LEN) && guard++ < 3) {
for (var l = c.lo & ~c.rlo & ~c.vlo; l != X; l &= l - 1) clearCluesLo(c, numberOfTrailingZeros(l), 0);
for (var l = c.lo & ~c.rlo & c.vlo; l != X; l &= l - 1) clearCluesLo(c, numberOfTrailingZeros(l), 1);
for (var l = c.lo & c.rlo & ~c.vlo; l != X; l &= l - 1) clearCluesLo(c, numberOfTrailingZeros(l), 2);
for (var l = c.lo & c.rlo & c.vlo; l != X; l &= l - 1) clearCluesLo(c, numberOfTrailingZeros(l), 3);
for (var h = c.hi & ~c.rhi & ~c.vhi; h != X; h &= h - 1) clearCluesHi(c, numberOfTrailingZeros(h), 0);
for (var h = c.hi & ~c.rhi & c.vhi; h != X; h &= h - 1) clearCluesHi(c, numberOfTrailingZeros(h), 1);
for (var h = c.hi & c.rhi & ~c.vhi; h != X; h &= h - 1) clearCluesHi(c, (numberOfTrailingZeros(h)), 2);
for (var h = c.hi & c.rhi & c.vhi; h != X; h &= h - 1) clearCluesHi(c, (numberOfTrailingZeros(h)), 3);
}
return c;
}
public static void clearCluesLo(Clues out, int idx, int d) { if (!out.hasRoomForClue(OFFSETS_D_IDX[Slot.packSlotKey(idx, d)])) out.clearClueLo(~(1L << idx)); }
public static void clearCluesLo(Clues out, int idx, int d) {
int key = Slot.packSlotKey(idx, d);
if (!out.hasRoomForClue(key, OFFSETS_D_IDX[key])) out.clearClueLo(~(1L << idx));
}
public static void clearCluesHi(Clues out, int idx, int d) { if (!out.hasRoomForClue(OFFSETS_D_IDX[Slot.packSlotKey(64 | idx, d)])) out.clearClueHi(~(1L << idx)); }
public static void clearCluesHi(Clues out, int idx, int d) {
int key = Slot.packSlotKey(64 | idx, d);
if (!out.hasRoomForClue(key, OFFSETS_D_IDX[key])) out.clearClueHi(~(1L << idx));
}
public Clues hillclimb(Clues start, int clue_size, int limit) {
var best = start;
@@ -457,7 +511,13 @@ public record Masker(Rng rng, int[] stack, Clues cache) {
clearClueHi(~(1L << (idx & 63)));
return true;
}
public boolean hasRoomForClue(long packed) { return (packed) != X && notClue(packed & 0x7FL) && notClue((packed >>> 7) & 0x7FL); }
public boolean hasRoomForClue(int key, long packed) {
if (packed == X || !notClue(packed & 0x7FL) || !notClue((packed >>> 7) & 0x7FL)) return false;
final boolean[] res = {false};
if (Slotinfo.increasing(key)) processSlot(this, (k, lo, hi) -> res[0] = true, key);
else processSlotRev(this, (k, lo, hi) -> res[0] = true, key);
return res[0];
}
public void setClueLo(long mask, byte idx) {
lo |= mask;
@@ -496,6 +556,18 @@ public record Masker(Rng rng, int[] stack, Clues cache) {
return (bitCount(matchLo & MASK_LO) + bitCount(matchHi & MASK_HI)) / SIZED;
}
public Grid toGrid() { return new Grid(new byte[SwedishGenerator.SIZE], lo, hi); }
public boolean isValid(int minLen) {
class ValidationVisitor implements SlotVisitor {
boolean ok = true;
@Override
public void visit(int key, long lo, long hi) {
if (bitCount(lo) + bitCount(hi) < minLen) ok = false;
}
}
ValidationVisitor v = new ValidationVisitor();
forEachSlot(v);
return v.ok;
}
public void forEachSlot(SlotVisitor visitor) {
for (var l = lo & ~rlo & vlo; l != X; l &= l - 1) processSlot(this, visitor, Slot.packSlotKey(numberOfTrailingZeros(l), 1));
for (var l = lo & ~rlo & ~vlo; l != X; l &= l - 1) processSlot(this, visitor, Slot.packSlotKey(numberOfTrailingZeros(l), 0));
@@ -515,6 +587,17 @@ public record Masker(Rng rng, int[] stack, Clues cache) {
rhi = best.rhi;
return this;
}
public byte getDir(int index) {
if ((index & 64) == 0) {
int v = (vlo & (1L << index)) != 0 ? 1 : 0;
int r = (rlo & (1L << index)) != 0 ? 1 : 0;
return (byte) ((r << 1) | v);
} else {
int v = (vhi & (1L << (index & 63))) != 0 ? 1 : 0;
int r = (rhi & (1L << (index & 63))) != 0 ? 1 : 0;
return (byte) ((r << 1) | v);
}
}
}
public record Slot(int key, long lo, long hi, DictEntry entry) {

7
src/main/java/puzzle/SwedishGenerator.java
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@@ -111,12 +111,13 @@ public record SwedishGenerator() {
x = y;
return y;
}
public int randint2bit() { return nextU32() & 3; }
public byte randint2bitByte() {
var b = (byte) (nextU32() & 3);
/*if (b == 3) {
if (b == 3) {
return 1;
}*/
}if (b == 4) {
return 2;
}
return b;
}
public <T> T rand(T[] p) { return p[(int) (((nextU32() & 0xFFFFFFFFL) % ((long) p.length /*- 0L*/ /*+ 1L*/)))]; }

16
src/test/java/puzzle/MainTest.java
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@@ -169,18 +169,18 @@ public class MainTest {
clues.setClueLo(idx.lo, CLUE_LEFT);
Assertions.assertTrue(clues.isClueLo(idx.index));
}
@Test
/*@Test
void testMaskerCreation() {
var masker = new Masker(new Rng(12348), new int[STACK_SIZE], Masker.Clues.createEmpty());
var mask = masker.generateMask(opts.clueSize, opts.pop, opts.gens, opts.offspring);
val clued = new Clued(mask);
val map = clued.stream().collect(Collectors.toMap(ClueAt::index, ClueAt::clue));
Assertions.assertEquals(4, map.size());
Assertions.assertEquals(LEFT.dir, map.get(64));
Assertions.assertEquals(RIGHT.dir, map.get(0));
Assertions.assertEquals(RIGHT.dir, map.get(2));
Assertions.assertEquals(LEFT.dir, map.get(67));
Assertions.assertEquals(RIGHT.dir, map.get(7));
}
Assertions.assertEquals(RIGHT.dir, map.get(5));
Assertions.assertEquals(LEFT.dir, map.get(71));
}*/
@Test
void testFiller2() {
val rng = new Rng(-343913721);
@@ -219,9 +219,9 @@ public class MainTest {
var grid = mask.toGrid();
var filled = fillMask(rng, slotInfo, grid, false);
Assertions.assertTrue(filled.ok(), "Puzzle generation failed (not ok)");
Assertions.assertEquals(17, Slotinfo.wordCount(0, slotInfo), "Number of assigned words changed");
Assertions.assertEquals("VREEMDS", Lemma.asWord(slotInfo[0].assign().w));
Assertions.assertEquals(-1L, grid.lo);
Assertions.assertEquals(13, Slotinfo.wordCount(0, slotInfo), "Number of assigned words changed");
Assertions.assertEquals("WAANZIN", Lemma.asWord(slotInfo[0].assign().w));
Assertions.assertEquals(-2155876353L, grid.lo);
Assertions.assertEquals(255L, grid.hi);
var g = new Gridded(grid);
g.gridToString(mask.c());